Numbers k such that k + prime(k) gives a triangular number.

Terms

a(0) =1a(1) =20a(2) =49a(3) =65a(4) =103a(5) =176a(6) =279a(7) =284a(8) =299a(9) =437a(10) =513a(11) =553a(12) =656a(13) =973a(14) =1271a(15) =1779a(16) =1921a(17) =2156a(18) =2312a(19) =2347a(20) =2554a(21) =2759a(22) =3176a(23) =3379a(24) =4008a(25) =4028a(26) =4132a(27) =5255a(28) =6354a(29) =6764